It's not like this was *THE* hero type II phaser. It's a rather obscure prop that had more exposure in publicity material than in the 2nd pilot.

It's also clear that the phaser rifle design was distinctly separate from the other props that all had some design commonality (black body material with silver metal trim). It would've been nice if there was at least one or two widgets on it in common with the other prop equipment.

Will it appreciate? Hard to say... But then, several quite wealthy individuals with a lot of disposable income and a burning desire to own an actual TOS prop may have been the cause of the bid fever on this one, far beyond what it could resell for later on.